Latch



(Mo m & 1). G. MILLEMANN.

LATCH.

Patented July 9, 1 88 9.

N PETERS, Phoio-Lhhngnyhnr. Wilmington. D. C,

UNITED STATES PATENT OFFICE.

DANIEL J. MILLEMANN AND DANIEL G. MILLEMANN, OF JEFFERSON, ILLINOIS.

LATCH.

SPECIFICATION forming part of Letters Patent No. 406,588, dated July 9,1889.

Application filed March 15, 1889. Serial No. 303,497. (ModeL) To allwhom it may concern.-

Be it known that we, DANIEL J. MILLE- MANN and DANIEL G. MILLEMANN,citizens of the United States of America, residing at Jefferson, in thecounty of Cook and State of Illinois, har e invented certain new andusefullmprovemen ts in Door-Fasteners, of which the following is aspecification, reference being had therein to the accompanying drawlngs.

This invention has for its object to providea device for securelylocking a door during night-time, so as to prevent burglars fromentering, and at the same time to press and hold the door close againstthe rabbet of the door-casing,.which is desirable, particularly inwinter-time, with doors leading outside and therefore being exposed onone side to the cold dry atmosphere and on its other side to the warmdamp air in the house, causing such door to warp; and with these objectsin view our invention consists of the novel devices and combinations ofdevices hereinafter described and specifically claimed.

In the accompanying drawings, Figure 1 represents a door with ourfastening attached. Fig. 2 is a sectional top View of the fastenerturned open, and Fig. 3 the same when closed. Figs. l, 5, and 6 show amodification of the fastener adapted for folding doors, in which Fig. atis a sectional top View of the same turned open, Fig. 5 of the same whenclosed, and Fig. 6 an elevation of the fastener as turned open.

Correspondingletters in the several figures of the drawings designatelike parts.

I11 Figs, 1, 2, and 3, A denotes the door, and B the doorcasing, towhich is secured vertically at any desired position an angleplate 0,providing in its corner a slotted swell for receiving the hub d of alever D, pivot-f ally secured in said slot by a pin 6. This lelever Dhas a square offset f, which, being swung upon the door A, will buttflat against, an iron plate g, secured by wood screws against said door,and this square ofiset f has a small flange or fin h, formed on its edgetoward the fulcrum, so that when the lever D is swung upon the door thisflange or fin It will engage the edge of plate g, locking the lever Dagainst being swung back from any 'pressure applied against the outsideof the door, such pressure constantly increasing its hold, while duringthe time no pressure is applied to the door the flange or fin h willreadily disengage by swinging the lever D. WVith this lever D, it willbe noticed, considerable force may be exerted for pushing the dooragainst its rabbet and holding it there, so that said door cannot warpand will fit perfectly tight.

The device shown in Figs. 4, 5, and 6 is intended for folding doors, inwhich L denotes the leaf secured when closed by top and bottom bolts,and M the leaf provided with a latch and lock and closing on a rabbet lof leaf L. The door-leaves L and M being flush when closed for thepurpose of securely locking one to the other, we secure an angle-plate Nto the corner of leaf L and an angle-plate '0 to the corner of leaf M,with the meeting sides of angle-plates N and O sunk into the wood. Atits corner the angle-plate N has a slotted swell for receiving the hub19 of a han: dle P. This handle P has a tangential position to hub 9,and said hub 19 is oval,with an oblong hole through its middle forpivotally securing it by a pin (1 in the slot of plate N, and at theroot of the handle it has formed a shoulder r, and diametricallyopposite to shoulder 8, both these shoulders being on the line of saidhub 19, where it has the largest diameter, and also in line with itsoblong pivot-pin hole,which largest diameterbetween shoulders r and 3being the same distance as ing in plate N and the corner of angle-plate0. By swinging the handle P onequarter of a revolution the shouldersrand swill bear upon these corners and will hold theleaf M securelyagainst the rabbet Z of leaf L, so that a pressure from the oppositeside against leaf M will only tend to increase the hold of released byswinging handle P, whereby the plate 0.

These fastenings, as will be seen, are very simple in theirconstruction, are easily atshoulder r the hub. 19 has formed another.

that between the cornert of the slotted openthe fastening, which,however, can be easily cam-shaped hub 19 will readily disengage from Intestimony whereof We affix our signatures to in presence of twoWitnesses.

DANIEL J. MILLEMANN. DANIEL G. MILLEMANN.

Witnesses:

WILLIAM H. LoTz, OTTO LUBKERT.

